lower jaw

noun

The part of the face below the mouth; the jaw.

Similar
underjawmandiblemandibulamandibular bonesubmaxillalower jawbonejawbonejowl
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Meanings

nounlower jaw (plural lower jaws)

plural lower jaws

  1. The part of the face below the mouth; the jaw.

    Synonyms: underjaw

  2. Specifically, the bone therein; the mandible of humans and other vertebrates that, with the cranium, composes the skull.

    Synonyms: mandible

Synonyms & antonyms

nounThe part of the face below the mouth; the jaw.

Similar
underjaw

nounSpecifically, the bone therein; the mandible of humans and other vertebrates that, with the cranium, composes the skull.

Similar
mandible

More synonyms by meaning

nounthe jaw in vertebrates that is hinged to open the mouth

Similar
mandiblemandibulamandibular bonesubmaxillalower jawbonejawbonejowl
Broader
jawarticulator
Also see
jawbonejowlmandiblesubmaxillaunderjaw

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

German Unterkiefer, Kiefer
  • Unterkieferpart of the face below the mouth
  • Kieferpart of the face below the mouth
  • Unterkieferknochenmandible of humans and other vertebrates
Swedish underkäke, underkäke
  • underkäkepart of the face below the mouth
  • underkäkemandible of humans and other vertebrates
  • mandibelmandible of humans and other vertebrates
Cite this entry
APA

lower jaw. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/lower%20jaw

MLA

“lower jaw.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/lower%20jaw. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “lower jaw,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/lower%20jaw.

Source: lower jaw on Wiktionary, CC BY-SA 4.0.